Method and device in communication node for wireless communication

ABSTRACT

The disclosure discloses a method and device in a communication node for wireless communication. The communication node receives first information, and performs Q energy detections respectively in Q time sub-pools within a first sub-band, and if energy detected by each energy detection of the Q energy detections is lower than a first threshold, starts to transmit a first radio signal at a first time-instant; the first information is used to determine K candidate time-instant subsets; a target time-instant subset is one of the K candidate time-instant subsets, the first time-instant belongs to the target time-instant subset; a frequency-domain bandwidth of the first sub-band is used to determine the target time-instant subset out of the K candidate time-instant subsets, and frequency-domain resources occupied by the first radio signal belong to the first sub-band. The disclosure can improve access fairness.

CROSS-REFERENCE TO RELATED APPLICATION

This application is a continuation of the U.S. patent application Ser.No. 17/123,137, filed on Dec. 16, 2020, which is a continuationapplication of U.S. application Ser. No. 16/411,163, filed on May 14,2019, claims the priority benefit of Chinese Patent Application SerialNumber 201810468288.3, filed on May 16, 2018, the full disclosure ofwhich is incorporated herein by reference.

BACKGROUND Technical Field

The disclosure relates to a transmitting method in wirelesscommunication systems, and in particular to a method and device fortransmission in unlicensed spectrums.

Related Art

The application scenarios of future wireless communication systems areincreasingly diversified, and different application scenarios imposedifferent performance requirements on the systems. In order to meet thedifferent performance requirements of various application scenarios, at3rd Generation Partner Project (3GPP) Radio Access Network (RAN) #72plenary meeting, it was decided to conduct research on New Radio (NR)(or 5G). The Work Item (WI) of the New Radio (NR) was approved at 3GPPRAN #75 plenary meeting, to start standardizing NR.

In order to adapt to various application scenarios and meet differentrequirements, the research project of unlicensed spectrum access underNR has also passed on the 3GPP RAN #75 plenary meeting. The researchproject is expected to be completed in the R15 version, and then the WIis launched in the R16 version to standardize related technologies.

SUMMARY

In the Long Term Evolution (LTE) License Assisted Access (LAA) project,both scheduling-based uplink transmission and Autonomous Uplink (AUL)are supported. For both scheduling-based uplink transmission and AUL, inorder to determine that the unlicensed spectrum is available prior totransmission, the user equipment needs to perform Listen Before Talk(LBT) on the unlicensed frequency domain. In AUL, in order to mitigatecollisions, the starting time-instants of multiple different uplink AULtransmissions are supported. In the 5G NR, due to the increase of thecarrier bandwidth, the LBT based on the sub-band smaller than thecarrier bandwidth is being discussed to improve the resourceutilization. Therefore, in the unauthorized access of the 5G NR, it ispossible to simultaneously support the sub-band-based. LBT andcarrier-based LBT.

The disclosure provides a solution to the design problem of the uplinktransmission time-instant in the LBT of different bandwidths. Theembodiments in the User Equipment (UE) of the disclosure and thefeatures in the embodiments may be applied to the base station withoutconflict, and vice versa. Further, the embodiments in the disclosure andthe features in the embodiments may be arbitrarily combined with eachother without conflict.

The disclosure discloses a method in a first-type communication node forwireless communication, comprising:

-   -   receiving first information;    -   performing Q energy detections respectively in Q time sub-pools        within a first sub-band, wherein the Q is a positive integer        greater than 1;    -   if the energy detected by each energy detection of the Q energy        detections is lower than a first threshold, starting to transmit        a first radio signal at a first time-instant;    -   wherein the first information is used to determine K candidate        time-instant subsets, each candidate time-instant subset of the        K candidate time-instant subsets comprises a positive integer        number of candidate time-instants, the K is a positive integer        greater than 1; a target time-instant subset is one of the K        candidate time-instant subsets, the first time-instant belongs        to the target time-instant subset; a frequency domain bandwidth        of the first sub-band is used to determine the target        time-instant subset out of the K candidate time-instant subsets,        the frequency domain resources occupied by the first radio        signal belong to the first sub-band; the first information is        transmitted through an air interface.

In one embodiment, determining the target time-instant subset out of theK candidate time-instant subsets by using a frequency domain bandwidthof the first sub-band guarantees the independent configuration of acandidate transmission starting time-instant of an uplink transmissionof the LBT based on different bandwidths, increasing flexibility, andreducing the probability of collisions.

In one embodiment, determining the target time-instant subset out of theK candidate time-instant subsets by using a frequency domain bandwidthof the first sub-band guarantees a fair access probability of the LBTbased on different bandwidths or access probability based on businessneeds.

According to an aspect of the disclosure, the above method ischaracterized by further including:

-   -   receiving second information;    -   wherein the second information is used to determine a frequency        domain bandwidth of the first sub-band, and the second        information is transmitted through the air interface.

According to an aspect of the disclosure, the above method ischaracterized in that a length of a time interval between any onecandidate time-instant within the K candidate time-instant subsets and afirst reference time-instant belongs to a first candidate time-lengthset, the K candidate time-instant subsets respectively correspond to Kcandidate time-length subsets, the lengths of time intervals betweencandidate time-instants in any one of the K candidate time-instantsubsets and the first reference time-instant constitute a candidatetime-length subset of the K candidate time-length subsets correspondingto the any one of the K candidate time-instant subsets; and the firstinformation is used to indicate the K candidate time-length subsets inthe first candidate time-length set.

According to an aspect of the disclosure, the above method ischaracterized in that at least one of {an amount of candidate timelengths in the first candidate time-length set, the distribution ofcandidate time lengths in the first candidate time-length set} isrelated to a subcarrier spacing of a subcarrier included in frequencydomain resources occupied by the first radio signal.

According to an aspect of the disclosure, the above method ischaracterized by further comprising:

-   -   receiving a first signaling;    -   wherein the first signaling is used to determine at least one of        frequency domain resources occupied by the first radio signal or        time domain resources occupied by the first radio signal, and        the first signaling is transmitted through the air interface.

According to an aspect of the disclosure, the above method ischaracterized in that the first radio signal successively occupies apart of a multi-carrier symbol and a positive integer number of completemulti-carrier symbol(s) in time domain, and the signal transmitted inthe part of the multi-carrier symbol occupied by the first radio signalis a cyclic extension of the signal transmitted in an earliest completemulti-carrier symbol occupied by the first radio signal.

The disclosure discloses a method in a second-type communication nodefor wireless communication, comprising:

-   -   transmitting first information;    -   receiving a first radio signal;    -   wherein the first information is used to determine K candidate        time-instant subsets, each candidate time-instant subset of the        K candidate time-instant subsets comprises a positive integer        number of candidate time-instants, the K is a positive integer        greater than 1; a target time-instant subset is one of the K        candidate time-instant subsets, the transmission starting        time-instant of the first radio signal is a first time-instant,        the first time-instant belongs to the target time-instant        subset; a frequency domain bandwidth of the first sub-band is        used to determine the target time-instant subset out of the K        candidate time-instant subsets, the frequency domain resources        occupied by the first radio signal belong to the first sub-band;        the first information is transmitted through an air interface.

According to an aspect of the disclosure, the above method ischaracterized by further comprising:

-   -   transmitting second information;    -   wherein the second information is used to determine a frequency        domain bandwidth of the first sub-band, and the second        information is transmitted through the air interface.

According to an aspect of the disclosure, the above method ischaracterized in that a length of a time interval between any onecandidate time-instant within the K candidate time-instant subsets and afirst reference time-instant belongs to a first candidate time-lengthset, the K candidate time-instant subsets respectively correspond to Kcandidate time-length subsets, the lengths of time intervals betweencandidate time-instants in any one of the K candidate time-instantsubsets and the first reference time-instant constitute a candidatetime-length subset of the K candidate time-length subsets correspondingto the any one of the K candidate time-instant subsets; and the firstinformation is used to indicate the K candidate time-length subsets inthe first candidate time-length set.

According to an aspect of the disclosure, the above method ischaracterized in that at least one of {an amount of candidate timelengths in the first candidate time-length set, the distribution ofcandidate time lengths in the first candidate time-length set} isrelated to a subcarrier spacing of a subcarrier included in frequencydomain resources occupied by the first radio signal.

According to an aspect of the disclosure, the above method ischaracterized by further comprising:

-   -   transmitting a first signaling;    -   wherein the first signaling is used to determine at least one of        frequency domain resources occupied by the first radio signal or        time domain resources occupied by the first radio signal, and        the first signaling is transmitted through the air interface.

According to an aspect of the disclosure, the above method ischaracterized in that the first radio signal successively occupies apart of a multi-carrier symbol and a positive integer number of completemulti-carrier symbol(s) in time domain, and the signal transmitted inthe part of the multi-carrier symbol occupied by the first radio signalis a cyclic extension of the signal transmitted in the earliest completemulti-carrier symbol occupied by the first radio signal.

The disclosure discloses a first-type communication node device forwireless communication, comprising:

-   -   a first receiver to receive first information;    -   a second receiver to perform Q energy detections respectively in        Q time sub-pools within a first sub-band, wherein the Q is a        positive integer greater than 1;    -   a first transmitter if the energy detected by each energy        detection of the Q energy detections is lower than a first        threshold, to start to transmit a first radio signal at a first        time-instant;    -   wherein the first information is used to determine K candidate        time-instant subsets, each candidate time-instant subset of the        K candidate time-instant subsets comprises a positive integer        number of candidate time-instants, the K is a positive integer        greater than 1; a target time-instant subset is one of the K        candidate time-instant subsets, the first time-instant belongs        to the target time-instant subset; a frequency domain bandwidth        of the first sub-band is used to determine the target        time-instant subset out of the K candidate time-instant subsets,        the frequency domain resources occupied by the first radio        signal belong to the first sub-band; the first information is        transmitted through an air interface.

According to an aspect of the disclosure, the first-type communicationnode device is characterized in that the first receiver receives secondinformation; wherein the second information is used to determine afrequency domain bandwidth of the first sub-band, and the secondinformation is transmitted through the air interface.

According to an aspect of the disclosure, the first-type communicationnode device is characterized in that a length of a time interval betweenany one candidate time-instant within the K candidate time-instantsubsets and a first reference time-instant belongs to a first candidatetime-length set, the K candidate time-instant subsets respectivelycorrespond to K candidate time-length subsets, the lengths of timeintervals between candidate time-instants in any one of the K candidatetime-instant subsets and the first reference time-instant constitute acandidate time-length subset of the K candidate time-length subsetscorresponding to the any one of the K candidate time-instant subsets;and the first information is used to indicate the K candidatetime-length subsets in the first candidate time-length set.

According to an aspect of the disclosure, the first-type communicationnode device is characterized in that at least one of {an amount ofcandidate time lengths in the first candidate time-length set, thedistribution of candidate time lengths in the first candidatetime-length set} is related to a subcarrier spacing of a subcarrierincluded in frequency domain resources occupied by the first radiosignal.

According to an aspect of the disclosure, the first-type communicationnode device is characterized in that the first receiver receives a firstsignaling; wherein the first signaling is used to determine at least oneof {frequency domain resources occupied by the first radio signal, timedomain resources occupied by the first radio signal}, and the firstsignaling is transmitted through the air interface.

According to an aspect of the disclosure, the first-type communicationnode device is characterized in that the first radio signal successivelyoccupies a part of a multi-carrier symbol and a positive integer numberof complete multi-carrier symbol(s) in time domain, and the signaltransmitted in the part of the multi-carrier symbol occupied by thefirst radio signal is a cyclic extension of the signal transmitted inthe earliest complete multi-carrier symbol occupied by the first radiosignal.

The disclosure discloses a second-type communication node device forwireless communication, comprising:

-   -   a second transmitter to transmit first information;    -   a third receiver to receive a first radio signal;    -   wherein the first information is used to determine K candidate        time-instant subsets, each candidate time-instant subset of the        K candidate time-instant subsets comprises a positive integer        number of candidate time-instants, the K is a positive integer        greater than 1; a target time-instant subset is one of the K        candidate time-instant subsets, the transmission starting        time-instant of the first radio signal is a first time-instant,        the first time-instant belongs to the target time-instant        subset; a frequency domain bandwidth of the first sub-band is        used to determine the target time-instant subset out of the K        candidate time-instant subsets, the frequency domain resources        occupied by the first radio signal belong to the first sub-band;        the first information is transmitted through an air interface.

According to an aspect of the disclosure, the second-type communicationnode device is characterized in that the second transmitter transmitssecond information; wherein the second information is used to determinea frequency domain bandwidth of the first sub-band, and the secondinformation is transmitted through the air interface.

According to an aspect of the disclosure, the second-type communicationnode device is characterized in that a length of a time interval betweenany one candidate time-instant within the K candidate time-instantsubsets and a first reference time-instant belongs to a first candidatetime-length set, the K candidate time-instant subsets respectivelycorrespond to K candidate time-length subsets, the lengths of timeintervals between candidate time-instants in any one of the K candidatetime-instant subsets and the first reference time-instant constitute acandidate time-length subset of the K candidate time-length subsetscorresponding to the any one of the K candidate time-instant subsets;and the first information is used to indicate the K candidatetime-length subsets in the first candidate time-length set.

According to an aspect of the disclosure, the second-type communicationnode device is characterized in that at least one of {an amount ofcandidate time lengths in the first candidate time-length set, thedistribution of candidate time lengths in the first candidatetime-length set} is related to a subcarrier spacing of a subcarrierincluded in frequency domain resources occupied by the first radiosignal.

According to an aspect of the disclosure, the second-type communicationnode device is characterized in that the second transmitter transmits afirst signaling; wherein the first signaling is used to determine atleast one of {frequency domain resources occupied by the first radiosignal, time domain resources occupied by the first radio signal}, andthe first signaling is transmitted through the air interface

According to an aspect of the disclosure, the second-type communicationnode device is characterized in that the first radio signal successivelyoccupies a part of a multi-carrier symbol and a positive integer numberof complete multi-carrier symbol(s) in time domain, and the signaltransmitted in the part of the multi-carrier symbol occupied by thefirst radio signal is a cyclic extension of the signal transmitted inthe earliest complete multi-carrier symbol occupied by the first radiosignal.

In one embodiment, the method according to the disclosure has thefollowing advantages:

-   -   the method according to the disclosure provides a possibility        for the network side to flexibly configure a candidate        transmission starting time-instant in the AUL according to the        bandwidth of the LBT or the type of the LBT, so that the network        side can adjust the access probability of the uplink AUL        according to service distribution or service demand, increasing        configuration flexibility and resource utilization;    -   the method according to the disclosure avoids the problem that        the broadband LBT (or carrier level LBT) may have a low access        probability due to blocking of the sub-band LBT, and ensures        fair unlicensed spectrum access.

BRIEF DESCRIPTION OF THE DRAWINGS

Other features, objects and advantages of the disclosure will becomemore apparent from the detailed description of non-restrictiveembodiments taken in conjunction with the following drawings.

FIG. 1 is a flow chart illustrating transmission of first information, Qenergy detections and a first radio signal according to an embodiment ofthe disclosure;

FIG. 2 is a schematic diagram illustrating a network architectureaccording to an embodiment of the disclosure;

FIG. 3 is a schematic diagram illustrating a radio protocol architectureof a user plane and a control plane according to an embodiment of thedisclosure;

FIG. 4 is a schematic diagram illustrating base station equipment anduser equipment according to an embodiment of the disclosure;

FIG. 5 is a flow chart illustrating transmission of a radio signalaccording to an embodiment of the disclosure;

FIG. 6 is a schematic diagram illustrating K candidate time-instantsubsets according to an embodiment of the disclosure.

FIG. 7 is a schematic diagram illustrating a relationship between Kcandidate time-instant subsets and K candidate time-length subsetsaccording to an embodiment of the disclosure.

FIG. 8 is a schematic diagram illustrating a relationship between afirst candidate time-length set and a subcarrier spacing of a subcarrierincluded in frequency domain resources occupied by a first radio signalaccording to an embodiment of the disclosure.

FIG. 9 is a schematic diagram illustrating a first radio signalaccording to an embodiment of the disclosure.

FIG. 10 is a block diagram illustrating the structure of a processingdevice of the first-type communication node device according to anembodiment of the disclosure.

FIG. 11 is a block diagram illustrating the structure of a processingdevice of the second-type communication node device according to anembodiment of the disclosure.

DESCRIPTION OF THE EMBODIMENTS

The technical schemes of the disclosure will be further described indetails below with reference to the accompanying drawings. It should benoted that the embodiments of the disclosure and the features in theembodiments may be combined with each other without conflict.

Embodiment 1

Embodiment 1 is a flow chart illustrating transmission of firstinformation, Q energy detections and a first radio signal according toone embodiment of the disclosure, as shown in FIG. 1 . In FIG. 1 , eachblock represents a step.

In Embodiment 1, the first-type communication node in the disclosurefirst receives the first information in step 101; then performs Q energydetections respectively in Q time sub-pools within a first sub-band, instep 102, wherein the Q is a positive integer greater than 1; if theenergy detected by each energy detection of the Q energy detections islower than a first threshold, starts to transmit a first radio signal ata first time-instant in step 103; wherein the first information is usedto determine K candidate time-instant subsets, each candidatetime-instant subset of the K candidate time-instant subsets comprises apositive integer number of candidate time-instants, the K is a positiveinteger greater than 1; a target time-instant subset is one of the Kcandidate time-instant subsets, the first time-instant belongs to thetarget time-instant subset; a frequency domain bandwidth of the firstsub-band is used to determine the target time-instant subset out of theK candidate time-instant subsets, the frequency domain resourcesoccupied by the first radio signal belong to the first sub-band; thefirst information is transmitted through an air interface.

In one embodiment, the first-type communication node in the disclosurefurther receives second information, wherein the second information isused to determine a frequency domain bandwidth of the first sub-band,and the second information is transmitted through the air interface.

In one embodiment, a length of a time interval between any one candidatetime-instant within the K candidate time-instant subsets and a firstreference time-instant belongs to a first candidate time-length set, theK candidate time-instant subsets respectively correspond to K candidatetime-length subsets, the lengths of time intervals between candidatetime-instants in any one of the K candidate time-instant subsets and thefirst reference time-instant constitute a candidate time-length subsetof the K candidate time-length subsets corresponding to the any one ofthe K candidate time-instant subsets; and the first information is usedto indicate the K candidate time-length subsets in the first candidatetime-length set.

In one embodiment, a length of a time interval between any one candidatetime-instant within the K candidate time-instant subsets and a firstreference time-instant belongs to a first candidate time-length set, theK candidate time-instant subsets respectively correspond to K candidatetime-length subsets, the lengths of time intervals between candidatetime-instants in any one of the K candidate time-instant subsets and thefirst reference time-instant constitute a candidate time-length subsetof the K candidate time-length subsets corresponding to the any one ofthe K candidate time-instant subsets; and the first information is usedto indicate the K candidate time-length subsets in the first candidatetime-length set; at least one of {an amount of candidate time lengths inthe first candidate time-length set, the distribution of candidate timelengths in the first candidate time-length set} is related to asubcarrier spacing of a subcarrier included in frequency domainresources occupied by the first radio signal.

In one embodiment, the first-type communication node in the disclosurefurther receives a first signaling; wherein the first signaling is usedto determine at least one of {frequency domain resources occupied by thefirst radio signal, time domain resources occupied by the first radiosignal}, and the first signaling is transmitted through the airinterface;

In one embodiment, the first radio signal successively occupies a partof a multi-carrier symbol and a positive integer number of completemulti-carrier symbol(s) in time domain, and the signal transmitted inthe part of the multi-carrier symbol occupied by the first radio signalis a cyclic extension of the signal transmitted in the earliest completemulti-carrier symbol occupied by the first radio signal.

In one embodiment, the first information is transmitted through ahigher-layer signaling.

In one embodiment, the first information is transmitted through aphysical-layer signaling.

In one embodiment, the first information includes all or part of ahigher-layer signaling.

In one embodiment, the first information includes all or part of aphysical-layer signaling.

In one embodiment, the first information includes all or part of anInformation Element (IE) in a Radio Resource Control (RRC) signaling.

In one embodiment, the first information includes all or part of fieldsin an Information Element (IE) in a Radio Resource Control (RRC)signaling.

In one embodiment, the first information is transmitted through aPhysical Broadcast Channel (PBCH).

In one embodiment, the first information includes one or more fields ina Master Information Block (MIB).

In one embodiment, the first information is transmitted through aDownlink Shared Channel (DL-SCH).

In one embodiment, the first information is transmitted through aPhysical Downlink Shared Channel (PDSCH).

In one embodiment, the first information includes one or more fields ina System Information Block (SIB).

In one embodiment, the first information includes one or more fields inRemaining System Information (RMSI).

In one embodiment, the first information is broadcast.

In one embodiment, the first information is unicast.

In one embodiment, the first information is cell specific.

In one embodiment, the first information is UE-specific.

In one embodiment, the first information is transmitted through aPhysical Downlink Control Channel (PDCCH).

In one embodiment, the first information is transmitted by a PhysicalDownlink Control Channel (PDCCH) scrambled by a Common Control RadioNetwork Temporary Identifier (CC-RNTI).

In one embodiment, the first information is transmitted through anunlicensed spectrum.

In one embodiment, the first information includes all or part of fieldsof a Downlink Control Information (DCI) signaling.

In one embodiment, the first information is used to determine the Kcandidate time-instant subsets, indicating that: the first information,the first-type communication node is used to determine the K candidatetime-instant subsets.

In one embodiment, the first information is used to determine the Kcandidate time-instant subsets, indicating that: the first informationis used to explicitly indicate the K candidate time-instant subsets.

In one embodiment, the first information is used to determine the Kcandidate time-instant subsets, indicating that: the first informationis used to implicitly indicate the K candidate time-instant subsets.

In one embodiment, the first information is used to determine the Kcandidate time-instant subsets, indicating that: the first informationis used to directly indicate the K candidate time-instant subsets.

In one embodiment, the first information is used to determine the Kcandidate time-instant subsets, indicating that: the first informationis used to indirectly indicate the K candidate time-instant subsets.

In one embodiment, each of the Q energy detections indicates that: thefirst-type communication node monitors received power in a correspondingtime sub-pool of the Q time sub-pools.

In one embodiment, each of the Q energy detections indicates that: thefirst-type communication node monitors received energy in acorresponding time sub-pool of the Q time sub-pools.

In one embodiment, each of the Q energy detections indicates that: thefirst-type communication node senses all radio signals on the sub-bandin a corresponding time sub-pool of the Q time sub-pools to obtainreceived power.

In one embodiment, each of the Q energy detections indicates that: thefirst-type communication node senses all radio signals on the sub-bandin a corresponding time sub-pool of the Q time sub-pools to obtainreceived energy.

In one embodiment, each of the Q energy detections is implemented by amethod defined in section 15 of 3GPP TS36.213.

In one embodiment, each of the Q energy detections is implemented by anenergy detection method in an LTE LAA.

In one embodiment, each of the Q energy detections is energy detectionin a Listen Before Talk (LBT).

In one embodiment, each of the Q energy detections is implemented by anenergy detection method in WiFi.

In one embodiment, each of the Q energy detections is implemented bymeasuring a Received Signal Strength Indication (RSSI).

In one embodiment, the first sub-band is deployed in an unlicensedspectrum.

In one embodiment, the Q energy detections are detected in a unit of dBm(millimeters).

In one embodiment, the Q energy detections are detected in a unit ofmilliwatts.

In one embodiment, the Q energy detections are detected in a unit ofjoules.

In one embodiment, the first-type communication node performs X energydetections in addition to the Q energy detections in the first sub-bandprior to transmitting the first radio signal, the energy detected byeach of the X energy detections is not lower than the first threshold,and the X is a positive integer.

In one embodiment, the first-type communication node performs X energydetections in addition to the Q energy detections in the first sub-bandprior to transmitting the first radio signal and subsequent to the lasttransmission, the energy detected by each of the X energy detections isnot lower than the first threshold, and the X is a positive integer.

In one embodiment, only the Q energy detections are performed in thefirst sub-band prior to transmitting the first radio signal andsubsequent to the last transmission.

In one embodiment, the first threshold is in a unit of dBm(millimeters).

In one embodiment, the first threshold is in a unit of milliwatts.

In one embodiment, the first threshold is in a unit of joules.

In one embodiment, the first threshold is predefined.

In one embodiment, the first threshold is fixed.

In one embodiment, the first threshold is configurable.

In one embodiment, the first threshold is related to the bandwidth ofthe first sub-band.

In one embodiment, the first threshold is determined by a bandwidth ofthe first sub-band through a specific mapping relationship.

In one embodiment, the first threshold is determined by a bandwidth ofthe first sub-band through a specific mapping function.

In one embodiment, the first threshold is set autonomously by thefirst-type communication node within a given range.

In one embodiment, the first threshold is in section 15.2.3 of 3GPPTS36.213 (v15.0.0).

In one embodiment, the first threshold is in section 15.2.3.1 of 3GPPTS36.213 (v15.0.0).

In one embodiment, the first sub-band is a carrier.

In one embodiment, the first sub-band is a Bandwidth Part (BWP).

In one embodiment, the first sub-band is part of a carrier.

In one embodiment, the first sub-band is a sub-band.

In one embodiment, the first sub-band consists of a positive integernumber of subcarriers that are continuous in the frequency domain.

In one embodiment, the bandwidth of the first sub-band is equal to 20MHz.

In one embodiment, the bandwidth of the first sub-band is equal to 10MHz.

In one embodiment, the bandwidth of the first sub-band is equal to 2.16GHz.

In one embodiment, the first sub-band consists of frequency domainresources occupied by a positive integer number of Physical ResourceBlocks (PRBs) in a frequency domain at a given Subcarrier Spacing (SCS).

In one embodiment, any two of the Q time sub-pools have the same timelength.

In one embodiment, two of the Q time sub-pools have unequal timelengths.

In one embodiment, one of the Q time sub-pools has a time sub-pool of 16microseconds.

In one embodiment, the earliest one of the Q time sub-pools has adifferent time length from other time sub-pools.

In one embodiment, any two of the Q time sub-pools are orthogonal intime.

In one embodiment, the Q time sub-pools occupy continuous time domainresources.

In one embodiment, any two of the Q time sub-pools occupy discontinuoustime domain resources.

In one embodiment, any one of the Q time sub-pools occupies continuoustime domain resources.

In one embodiment, the Q time sub-pools are listening time in a Cat 4(Category 4) LBT.

In one embodiment, the Q time sub-pools include a defer time slot and aback-off time slot in a Cat 4 (Category 4) LBT.

In one embodiment, the first radio signal is transmitted through anUplink Shared Channel (UL-SCH).

In one embodiment, the first radio signal is transmitted through aPhysical Uplink Shared Channel (PUSCH).

In one embodiment, the first radio signal is obtained after all or apart of the bits of a Transport Block (TB) are sequentially subjected totransport block Cyclic Redundancy Check (CRC) addition, code blocksegmentation, code block CRC addition, rate matching, concatenation,scrambling, a modulation mapper, a layer mapper, precoding, a resourceelement mapper, and baseband signal generation.

In one embodiment, the first radio signal is obtained after all or apart of the bits of a Transport Block (TB) are sequentially subjected totransport block Cyclic Redundancy Check (CRC) addition, code blocksegmentation, code block CRC addition, rate matching, concatenation,scrambling, a modulation mapper, a layer mapper, transform precoding,precoding, a resource element mapper, and baseband signal generation.

In one embodiment, the first radio signal is obtained after all or apart of the bits of a positive integer number of Code Blocks (CBs) aresequentially subjected to code block CRC addition, rate matching,concatenation, scrambling, a modulation mapper, a layer mapper,transform precoding, precoding, a resource element mapper, and basebandsignal generation.

In one embodiment, the first radio signal is obtained after all or apart of the bits of a positive integer number of Code Blocks (CBs) aresequentially subjected to code block CRC addition, rate matching,concatenation, scrambling, a modulation mapper, a layer mapper,precoding, a resource element mapper, and baseband signal generation.

In one embodiment, the first radio signal is transmitted by a method ofAutonomous Uplink (AUL).

In one embodiment, each of the K candidate time-instant subsets includesmore than one candidate time-instant.

In one embodiment, one of the K candidate time-instant subsets includesonly one candidate time-instant.

In one embodiment, one of the K candidate time-instant subsets includesmore than one candidate time-instant.

In one embodiment, the target time-instant subset includes more than onecandidate time-instant.

In one embodiment, the target time-instant subset includes only onecandidate time-instant.

In one embodiment, the target time-instant subset includes more than onecandidate time-instant, and the first-type communication node selectsthe first time-instant in the target time-instant subset autonomously.

In one embodiment, the target time-instant subset includes more than onecandidate time-instant, and the first-type communication node selectsthe first time-instant in the target time-instant subset randomly.

In one embodiment, the frequency domain bandwidth of the first sub-bandis used to determine the target time-instant subset out of the Kcandidate time-instant subsets, indicating that: the frequency domainbandwidth of the first sub-band is used to determine the targettime-instant subset out of the K candidate time-instant subsetsaccording to a given mapping relationship.

In one embodiment, the frequency domain bandwidth of the first sub-bandis used to determine the target time-instant subset out of the Kcandidate time-instant subsets, indicating that: the first-typecommunication node is used to determine the target time-instant subsetout of the K candidate time-instant subsets at the frequency domainbandwidth in which the first sub-band performs Listen Before Talk (LBT).

In one embodiment, the frequency domain bandwidth of the first sub-bandis used to determine the target time-instant subset out of the Kcandidate time-instant subsets, indicating that: the first-typecommunication node determines the target time-instant subset out of theK candidate time-instant subsets according to the frequency domainbandwidth in which the first sub-band performs Listen Before Talk (LBT).

In one embodiment, the frequency domain bandwidth of the first sub-bandis used to determine the target time-instant subset out of the Kcandidate time-instant subsets, indicating that: the K candidatetime-instant subsets correspond to a possible bandwidth of the K firstsub-bands, respectively, and the first-type communication nodedetermines the corresponding target time-instant subset according to theselected bandwidth of the first sub-band.

In one embodiment, the frequency domain bandwidth of the first sub-bandis used to determine the target time-instant subset out of the Kcandidate time-instant subsets, indicating that: the K candidatetime-instant subsets correspond to a possible frequency domain bandwidthof K LBTs, respectively, and the first-type communication nodedetermines the corresponding target time-instant subset according to theselected frequency domain bandwidth of the LBT.

In one embodiment, the frequency domain bandwidth of the first sub-bandis used to determine the target time-instant subset out of the Kcandidate time-instant subsets, indicating that: the first informationin the disclosure is also used to indicate a possible bandwidth of the Kfirst sub-bands corresponding to the K candidate time-instant subsets,respectively, and the first-type communication node determines thecorresponding target time-instant subset according to the selectedbandwidth of the first sub-band.

In one embodiment, the frequency domain bandwidth of the first sub-bandis used to determine the target time-instant subset out of the Kcandidate time-instant subsets, indicating that: the K candidatetime-instant subsets correspond to the type of the LBT (the sub-band LBTor a broadband or carrier-level LBT), respectively, and the first-typecommunication node determines the corresponding target time-instantsubset according to the selected frequency domain bandwidth of the LBT.

In one embodiment, the frequency domain bandwidth of the first sub-bandis used to determine the target time-instant subset out of the Kcandidate time-instant subsets, indicating that: the first informationin the disclosure is used to indicate the type of the LBT (the sub-bandLBT or a broadband or carrier-level LBT) corresponding to the Kcandidate time-instant subsets, respectively, and the first-typecommunication node determines the corresponding target time-instantsubset according to the selected frequency domain bandwidth of the LBT.

In one embodiment, the frequency domain resources occupied by the firstradio signal are all frequency domain resources in the first sub-band.

In one embodiment, the frequency domain resources occupied by the firstradio signal are a part of the frequency domain resources in the firstsub-band.

In one embodiment, the frequency domain resources occupied by the firstradio signal are all the interlaces in the first sub-band.

In one embodiment, the frequency domain resources occupied by the firstradio signal are a part of the interlaces in the first sub-band.

In one embodiment, the air interface is wireless.

In one embodiment, the air interface includes a wireless channel.

In one embodiment, the air interface is an interface between thesecond-type communication node and the first-type communication node.

In one embodiment, the air interface is a Uu interface.

Embodiment 2

Embodiment 2 illustrates a schematic diagram of a network architectureaccording to the present disclosure, as shown in FIG. 2 . FIG. 2illustrates a diagram of a system network architecture 200 of NR 5G,Long-Term Evolution (LTE), and Long-Term Evolution Advanced (LTE-A). TheNR 5G or LTE network architecture 200 may be referred to as an EvolvedPacket System (EPS) 200. The EPS 200 may include one or more of UserEquipment (UE) 201, a Next Generation Radio Access Network (NG-RAN) 202,an Evolved Packet Core (EPC)/5G-Core Network (5G-CN) 210, a HomeSubscriber Server (HSS) 220 and an Internet Service 230. The EPS may beinterconnected with other access networks. For simple description, theentities/interfaces are not shown. As shown in the figure, the EPSprovides packet switching services. Those skilled in the art are easy tounderstand that various concepts presented throughout the presentdisclosure can be extended to networks providing circuit switchingservices or other cellular networks. The NG-RAN includes an NR node B(gNB) 203 and other gNBs 204. The gNB 203 provides UE 201 oriented userplane and control plane protocol terminations. The gNB 203 may beconnected to other gNBs 204 via an Xn interface (for example, backhaul).The gNB 203 may be called a base station, a base transceiver station, aradio base station, a radio transceiver, a transceiver function, a BasicService Set (BSS), an Extended Service Set (ESS), a Transmitter ReceiverNode (TRP) or other appropriate terms. In the NTN network, the gNB 203may be a satellite, an aircraft or a ground base station relayed bysatellite. The gNB 203 provides an access point of the EPC/5G-CN 210 forthe UE 201. Examples of UE 201 include cellular phones, smart phones,Session Initiation Protocol (SIP) phones, laptop computers, PersonalDigital Assistants (PDAs), Satellite Radios, Global Positioning Systems,multimedia devices, video devices, digital audio player (for example,MP3 players), cameras, games consoles, unmanned aerial vehicles, airvehicles, narrow-band Internet of Things equipment, machine-typecommunication equipment, land vehicles, automobiles, wearable equipment,or any other devices having similar functions. Those skilled in the artalso can call the UE 201 a mobile station, a subscriber station, amobile unit, a subscriber unit, a wireless unit, a remote unit, a mobiledevice, a wireless device, a radio communication device, a remotedevice, a mobile subscriber station, an access terminal, a mobileterminal, a wireless terminal, a remote terminal, a handset, a userproxy, a mobile client, a client or other appropriate terms. The gNB 203is connected to the EPC/5G-CN 210 via an S1/NG interface. The EPC/5G-CN210 includes an MME/AMF/UPF 211, other MME/AMF/UPFs 214, a ServiceGateway (S-GW) 212 and a Packet Data Network Gateway (P-GW) 213. TheMME/AMF/UPF 211 is a control node for processing a signaling between theUE 201 and the EPC/5G-CN 210. Generally, the MME/AMF/UPF 211 providesbearer and connection management. All user Internet Protocol (IP)packets are transmitted through the S-GW 212. The S-GW 212 is connectedto the P-GW 213. The P-GW 213 provides UE IP address allocation andother functions. The P-GW 213 is connected to the Internet service 230.The Internet service 230 includes IP services corresponding tooperators, specifically including Internet, Intranet, IP MultimediaSubsystems (IP IMSs) and Packet Switching Streaming Services (PSSs).

In one embodiment, the UE 201 corresponds to the first-typecommunication node device in the disclosure.

In one embodiment, the UE 201 supports transmissions in an unlicensedspectrum.

In one embodiment, the gNB 203 corresponds to the second-typecommunication node device in the disclosure.

In one embodiment, the gNB 203 supports transmission in an unlicensedspectrum.

Embodiment 3

Embodiment 3 is a schematic diagram illustrating a radio protocolarchitecture of a user plane and a control plane according to thedisclosure, as shown in FIG. 3 . FIG. 3 illustrates a schematic diagramof a radio protocol architecture of a user plane and a control plane. InFIG. 3 , the radio protocol architecture of the first-type communicationnode device (UE) and the second-type communication node device (gNB oreNB or a satellite or aircraft in the NTN) is represented by threelayers, which are a layer 1, a layer 2 and a layer 3 respectively. Thelayer 1 (L1) 301 is the lowest layer and performs signal processingfunctions of each PHY layer. The layer 1 is called PHY 301 in thispaper. The layer 2 (L2) 305 is above the PHY 301, and is in charge ofthe link between the first-type communication node device and thesecond-type communication node device via the PHY 301. In the userplane, the L2 305 includes a Medium Access Control (MAC) sublayer 302, aRadio Link Control (RLC) sublayer 303, and a Packet Data ConvergenceProtocol (PDCP) sublayer 304. All the three sublayers terminate at thefirst-type communication node device of the network side. Although notdescribed in FIG. 3 , the first-type communication node device mayinclude several higher layers above the L2 305, such as a network layer(i.e. IP layer) terminated at a P-GW of the network side and anapplication layer terminated at the other side of the connection (i.e. apeer UE, a server, etc.). The PDCP sublayer 304 provides multiplexingamong variable radio bearers and logical channels. The PDCP sublayer 304also provides a header compression for a higher-layer packet so as toreduce a radio transmission overhead. The PDCP sublayer 304 providessecurity by encrypting a packet and provides support for the first-typecommunication node device movement between the second-type communicationnode devices. The RLC sublayer 303 provides segmentation andreassembling of a higher-layer packet, retransmission of a lost packet,and reordering of a lost packet so as to compensate the disorderedreceiving caused by Hybrid Automatic Repeat Request (HARQ). The MACsublayer 302 provides multiplexing between logical channels andtransport channels. The MAC sublayer 302 is also responsible forallocating between the first-type communication node devices variousradio resources (i.e., resource block) in a cell. The MAC sublayer 302is also in charge of HARQ operation. In the control plane, the radioprotocol architecture of the first-type communication node device andthe second-type communication node device is almost the same as theradio protocol architecture in the user plane on the PHY 301 and the L2305, but there is no header compression function for the control plane.The control plane also includes a Radio Resource Control (RRC) sublayer306 in the layer 3 (L3). The RRC sublayer 306 is responsible foracquiring radio resources (i.e. radio bearer) and configuring the lowerlayers using an RRC signaling between the second-type communication nodedevice and the first-type communication node device.

In one embodiment, the radio protocol architecture of FIG. 3 isapplicable to the first-type communication node device in thedisclosure.

In one embodiment, the radio protocol architecture of FIG. 3 isapplicable to the second-type communication node device in thedisclosure.

In one embodiment, the first information in the disclosure is generatedin the RRC 306.

In one embodiment, the first information in the disclosure is generatedin the MAC 302.

In one embodiment, the first information in the disclosure is generatedby the PHY 301.

In one embodiment, the first radio signal in the disclosure is generatedin the RRC 306.

In one embodiment, the first radio signal in the disclosure is generatedby the MAC 302.

In one embodiment, the first radio signal in the disclosure is generatedby the PHY 301.

In one embodiment, the Q energy detections in the disclosure areperformed on the PHY 301.

In one embodiment, the second information in the disclosure is generatedin the RRC 306.

In one embodiment, the second information in the disclosure is generatedin the MAC 302.

In one embodiment, the second information in the disclosure is generatedby the PHY 301.

In one embodiment, the first signaling in the disclosure is generated inthe RRC 306.

In one embodiment, the first signaling in the disclosure is generated bythe MAC 302.

In one embodiment, the first signaling in the disclosure is generated bythe PHY 301.

Embodiment 4

Embodiment 4 is a schematic diagram illustrating base station equipmentand given user equipment according to the disclosure, as shown in FIG. 4. FIG. 4 is a block diagram of a gNB/eNB 410 in communication with a UE450 in an access network.

The user equipment (UE 450) includes a controller/processor 490, amemory 480, a receiving processor 452, a transmitter/receiver 456, atransmitting processor 455 and a data source 467, and thetransmitter/receiver 456 includes an antenna 460. Data source 467provides an upper-layer packet to the controller/processor 490, whichprovides packet header compression and decompression, encryption anddecryption, packet segmentation connection and reordering, andmultiplexing and demultiplexing between the logical and transportchannels for implementing the L2 layer protocol for the user plane andthe control plane. The upper-layer packet may include data or controlinformation, such as a Downlink Shared Channel (DL-SCH) or Uplink SharedChannel (UL-SCH). The transmitting processor 455 implements varioussignal transmission processing functions for the L1 layer (i.e., thephysical layer) including coding, interleaving, scrambling, modulating,power control/allocation, precoding, physical layer control signalinggeneration, etc. The receiving processor 452 implements various signalreceiving processing functions for the L1 layer (i.e., the physicallayer) including decoding, deinterleaving, descrambling, demodulating,de-precoding, physical layer control signaling extraction, etc. Thetransmitter 456 is configured to convert the baseband signal provided bythe transmitting processor 455 into a radio frequency signal andtransmit the signal via the antenna 460. The receiver 456 is configuredto convert the radio frequency signal received through the antenna 460into a baseband signal and provide the signal to the receiving processor452.

The base station equipment (410) may include a controller/processor 440,a memory 430, a receiving processor 412, a transmitter/receiver 416 anda transmitting processor 415, and the transmitter/receiver 416 includesan antenna 420. The upper-layer packet arrives at thecontroller/processor 440, which provides packet header compression anddecompression, encryption and decryption, packet segmentation connectionand reordering, and multiplexing and demultiplexing between the logicaland transport channels for implementing the L2 layer protocol for theuser plane and the control plane. The upper-layer packet may includedata or control information, such as a DL-SCH or UL-SCH. Thetransmitting processor 415 implements various signal transmissionprocessing functions for the L1 layer (i.e., the physical layer)including coding, interleaving, scrambling, modulating, powercontrol/allocation, precoding, physical layer signaling (includingsynchronization signals, reference signals, etc.) generation, etc. Thereceiving processor 412 implements various signal receiving processingfunctions for the L1 layer (i.e., the physical layer) includingdecoding, deinterleaving, descrambling, demodulating, de-precoding,physical layer signaling extraction, etc. The transmitter 416 isconfigured to convert the baseband signal provided by the transmittingprocessor 415 into a radio frequency signal and transmit the signal viathe antenna 420. The receiver 416 is configured to convert the radiofrequency signal received through the antenna 420 into a baseband signaland provide the signal to the receiving processor 412.

In the Downlink (DL), the upper-layer packet (such as the firstinformation and the second information in the disclosure) is provided tothe controller/processor 440. The controller/processor 440 implementsthe function for the L2 layer. In the DL, the controller/processor 440provides packet header compression, encryption, packet segmentation andreordering, multiplexing between the logical and transport channels, andradio resource allocation to the UE 450 based on various prioritymetrics. The controller/processor 440 is also responsible for HARQoperation, retransmission of lost packets, and signaling to the UE 450.For example, the first information and the second information in thedisclosure are both generated in the controller/processor 440. Thetransmitting processor 415 implements various signal processingfunctions for the L1 layer (i.e., the physical layer), including coding,interleaving, scrambling, modulating, power control/allocation,precoding, and physical layer control signaling generation, etc. Themodulation symbols are divided into parallel streams and each stream ismapped to a corresponding multi-carrier subcarrier and/or multi-carriersymbol, which is then mapped to the antenna 420 by the transmittingprocessor 415 via the transmitter 416 and is transmitted in the form ofa radio frequency signal. The first information and the secondinformation in the disclosure is mapped by the transmitting processor415 onto the target air interface resources and is mapped to the antenna420 via the transmitter 416 and is transmitted in the form of a radiofrequency signal. At the receiving end, each receiver 456 receives aradio frequency signal through its respective antenna 460. Each receiver456 recovers the baseband information modulated onto the radio frequencycarrier and provides the baseband information to the receiving processor452. The receiving processor 452 implements various signal receivingprocessing functions for the L1 layer. The signal receiving processingfunction includes receiving the physical layer signals of the firstinformation and the second information in the disclosure, and performingQ energy detections in the disclosure, etc., performing demodulationbased on various modulation schemes (such as Binary Phase Shift Keying(BPSK), Quadrature Phase Shift Keying (QPSK)) through the multi-carriersymbol(s) in the multi-carrier symbol stream, then scrambling, decodingand deinterleaving to recover data or control signals transmitted by thegNB 410 on the physical channel, and then providing the data and controlsignals to the controller/processor 490. The controller/processor 490implements the L2 layer. The controller/processor 490 interprets thefirst information and the second information in the disclosure. Thecontroller/processor may be associated with a memory 480 in whichprogram codes and data are stored. The memory 480 may be referred to asa computer-readable medium.

In an uplink (UL) transmission, data source 467 is used to providerelevant configuration data of the signal to the controller/processor490. The data source 467 represents all of the protocol layers above theL2 layer, and the first radio signal in the disclosure is generated atdata source 467. The controller/processor 490 implements the L2 layerprotocol for the user plane and the control plane by providing packetheader compression, encryption, packet segmentation and reordering, andmultiplexing between the logical and transport channels based on theconfiguration allocation of the gNB 410. The controller/processor 490 isalso responsible for HARQ operation, retransmission of lost packets, andsignaling to the gNB 410. The transmitting processor 455 implementsvarious signal transmission processing functions for the L1 layer (i.e.,the physical layer). The signal transmission processing functionsinclude encoding, modulation, etc. The modulation symbols are dividedinto parallel streams, and each stream is mapped to a correspondingmulti-carrier subcarrier and/or multi-carrier symbol for generating abaseband signal, and is then mapped to the antenna 460 by thetransmitting processor 455 via the transmitter 456 and is transmitted inthe form of a radio frequency signal. The signal of the physical layer(including the generation and transmission of the first radio signal inthe disclosure) is generated by the transmitting processor 455. Thereceiver 416 receives a radio frequency signal through its respectiveantenna 420. Each receiver 416 recovers the baseband informationmodulated onto the radio frequency carrier and provides the basebandinformation to the receiving processor 412. The receiving processor 412implements various signal receiving processing functions for the L1layer (i.e., the physical layer), including receiving the first radiosignal in the disclosure. The signal receiving processing functionincludes acquiring a multi-carrier symbol stream, then performingdemodulation based on various modulation schemes on the multi-carriersymbol(s) in the multi-carrier symbol stream, then decoding to recoverdata or control signals originally transmitted by the gNB 450 on thephysical channel, and then providing the data and/or control signals tothe controller/processor 440. The receiving processorcontroller/processor 490 implements the L2 layer. Thecontroller/processor may be associated with a memory 430 in whichprogram codes and data are stored. The memory 430 may be referred to asa computer-readable medium.

In one embodiment, the UE 450 corresponds to the first-typecommunication node device in the disclosure.

In one embodiment, the gNB 410 corresponds to the second-typecommunication node device in the disclosure.

In one embodiment, the UE 450 device includes: at least one processorand at least one memory, wherein the at least one memory includes acomputer program code; the at least one memory and the computer programcode are configured to be used together with the at least one processor.The UE 450 device at least includes: receiving first information;performing Q energy detections respectively in Q time sub-pools within afirst sub-band, wherein the Q is a positive integer greater than 1; ifthe energy detected by each energy detection of the Q energy detectionsis lower than a first threshold, starting to transmit a first radiosignal at a first time-instant; wherein the first information is used todetermine K candidate time-instant subsets, each candidate time-instantsubset of the K candidate time-instant subsets comprises a positiveinteger number of candidate time-instants, the K is a positive integergreater than 1; a target time-instant subset is one of the K candidatetime-instant subsets, the first time-instant belongs to the targettime-instant subset; a frequency domain bandwidth of the first sub-bandis used to determine the target time-instant subset out of the Kcandidate time-instant subsets, the frequency domain resources occupiedby the first radio signal belong to the first sub-band; the firstinformation is transmitted through an air interface.

In one embodiment, the UE 450 includes: a memory in which acomputer-readable instruction program is stored, wherein thecomputer-readable instruction program generates an action when executedby the at least one processor. The action including: receiving firstinformation; performing Q energy detections respectively in Q timesub-pools within a first sub-band, wherein the Q is a positive integergreater than 1; if the energy detected by each energy detection of the Qenergy detections is lower than a first threshold, starting to transmita first radio signal at a first time-instant; wherein the firstinformation is used to determine K candidate time-instant subsets, eachcandidate time-instant subset of the K candidate time-instant subsetscomprises a positive integer number of candidate time-instants, the K isa positive integer greater than 1; a target time-instant subset is oneof the K candidate time-instant subsets, the first time-instant belongsto the target time-instant subset; a frequency domain bandwidth of thefirst sub-band is used to determine the target time-instant subset outof the K candidate time-instant subsets, the frequency domain resourcesoccupied by the first radio signal belong to the first sub-band; thefirst information is transmitted through an air interface.

In one embodiment, the eNB 410 device includes: at least one processorand at least one memory, wherein the at least one memory includes acomputer program code; the at least one memory and the computer programcode are configured to be used together with the at least one processor.The eNB 410 device at least includes: transmitting first information;receiving a first radio signal; wherein the first information is used todetermine K candidate time-instant subsets, each candidate time-instantsubset of the K candidate time-instant subsets comprises a positiveinteger number of candidate time-instants, the K is a positive integergreater than 1; a target time-instant subset is one of the K candidatetime-instant subsets, the transmission starting time-instant of thefirst radio signal is a first time-instant, the first time-instantbelongs to the target time-instant subset; a frequency domain bandwidthof the first sub-band is used to determine the target time-instantsubset out of the K candidate time-instant subsets, the frequency domainresources occupied by the first radio signal belong to the firstsub-band; the first information is transmitted through an air interface.

In one embodiment, the eNB 410 includes: a memory in which acomputer-readable instruction program is stored, wherein thecomputer-readable instruction program generates an action when executedby the at least one processor. The action including: transmitting firstinformation; receiving a first radio signal; wherein the firstinformation is used to determine K candidate time-instant subsets, eachcandidate time-instant subset of the K candidate time-instant subsetscomprises a positive integer number of candidate time-instants, the K isa positive integer greater than 1; a target time-instant subset is oneof the K candidate time-instant subsets, the transmission startingtime-instant of the first radio signal is a first time-instant, thefirst time-instant belongs to the target time-instant subset; afrequency domain bandwidth of the first sub-band is used to determinethe target time-instant subset out of the K candidate time-instantsubsets, the frequency domain resources occupied by the first radiosignal belong to the first sub-band; the first information istransmitted through an air interface.

In one embodiment, the receiver 456 (including the antenna 460), thereceiving processor 452 and the controller/processor 490 are used toreceive the first information in the disclosure.

In one embodiment, the receiver 456 (including the antenna 460), thereceiving processor 452 and the controller/processor 490 are used toreceive the second information in the disclosure.

In one embodiment, the receiver 456 (including the antenna 460) and thereceiving processor 452 are used to perform the Q energy detections inthe disclosure.

In one embodiment, the receiver 456 (including the antenna 460) and thereceiving processor 452 are used to receive the first signaling in thedisclosure.

In one embodiment, the transmitter 456 (including the antenna 460) andthe transmitting processor 455 are used to transmit the first radiosignal in the disclosure.

In one embodiment, the transmitter 416 (including the antenna 420), thetransmitting processor 415, and the controller/processor 440 are used totransmit the first information in the disclosure.

In one embodiment, the transmitter 416 (including the antenna 420), thetransmitting processor 415, and the controller/processor 440 are used totransmit the second information in the disclosure.

In one embodiment, the transmitter 416 (including the antenna 420) andthe transmitting processor 415 are used to transmit the first signalingin the disclosure.

In one embodiment, the receiver 416 (including the antenna 420) and thereceiving processor 412 are used to receive the first radio signal inthe disclosure.

Embodiment 5

Embodiment 5 is a flow chart illustrating transmission of a radio signalaccording to one embodiment of the disclosure, as shown in FIG. 5 . InFIG. 5 , the second-type communication node N1 is a maintenance basestation of the serving cell of the second-type communication node U2.

For the second-type communication node N1, the second information istransmitted in step S11, the first information is transmitted in stepS12, the first signaling is transmitted in step S13, and the first radiosignal is received in step S14.

For the first-type communication node U2, the second information isreceived in step S21, the first information is received in step S22, thefirst signaling is received in step S23, Q energy detections areperformed in Q time sub-pools within a first sub-band, respectively instep S14, and the first radio signal is transmitted in step S25.

In Embodiment 5, the first information is used to determine K candidatetime-instant subsets, each candidate time-instant subset of the Kcandidate time-instant subsets comprises a positive integer number ofcandidate time-instants, the K is a positive integer greater than 1; atarget time-instant subset is one of the K candidate time-instantsubsets, the first time-instant belongs to the target time-instantsubset; a frequency domain bandwidth of the first sub-band is used todetermine the target time-instant subset out of the K candidatetime-instant subsets, the frequency domain resources occupied by thefirst radio signal belong to the first sub-band; the second informationis used to determine a frequency domain bandwidth of the first sub-band;the first signaling is used to determine at least one of {frequencydomain resources occupied by the first radio signal, time domainresources occupied by the first radio signal}.

In one embodiment, a length of a time interval between any one candidatetime-instant within the K candidate time-instant subsets and a firstreference time-instant belongs to a first candidate time-length set, theK candidate time-instant subsets respectively correspond to K candidatetime-length subsets, the lengths of time intervals between candidatetime-instants in any one of the K candidate time-instant subsets and thefirst reference time-instant constitute a candidate time-length subsetof the K candidate time-length subsets corresponding to the any one ofthe K candidate time-instant subsets; and the first information is usedto indicate the K candidate time-length subsets in the first candidatetime-length set.

In one embodiment, at least one of {an amount of candidate time lengthsin the first candidate time-length set, the distribution of candidatetime lengths in the first candidate time-length set} is related to asubcarrier interval between subcarriers included in frequency domainresources occupied by the first radio signal.

In one embodiment, the first radio signal successively occupies a partof a multi-carrier symbol and a positive integer number of completemulti-carrier symbol(s) in time domain, and the signal transmitted inthe part of the multi-carrier symbol occupied by the first radio signalis a cyclic extension of the signal transmitted in the earliest completemulti-carrier symbol occupied by the first radio signal.

In one embodiment, the second information is used to determine afrequency domain bandwidth of the first sub-band, indicating that: thesecond information indicates the energy detection bandwidth in which Qenergy detections are performed in the Q time sub-pools, respectively.

In one embodiment, the second information is used to determine afrequency domain bandwidth of the first sub-band, indicating that: thesecond information indicates the filter bandwidth in which Q energydetections are performed in the Q time sub-pools, respectively.

In one embodiment, the second information is used to determine afrequency domain bandwidth of the first sub-band, indicating that: thesecond information indicates the type of the LBT, and the type of theLBT includes a broadband LBT and a narrowband LBT.

In one embodiment, the second information is used to determine afrequency domain bandwidth of the first sub-band, indicating that: thesecond information indicates a relationship between a bandwidth of theLBT and a carrier bandwidth.

In one embodiment, the second information is used to determine afrequency domain bandwidth of the first sub-band, indicating that: thesecond information is used by the first-type communication node todetermine the frequency domain bandwidth of the first sub-band.

In one embodiment, the second information is used to determine afrequency domain bandwidth of the first sub-band, indicating that: thesecond information is used to explicitly indicate the frequency domainbandwidth of the first sub-band.

In one embodiment, the second information is used to determine afrequency domain bandwidth of the first sub-band, indicating that: thesecond information is used to implicitly indicate the frequency domainbandwidth of the first sub-band.

In one embodiment, the second information is used to determine afrequency domain bandwidth of the first sub-band, indicating that: thesecond information is used to directly indicate the frequency domainbandwidth of the first sub-band.

In one embodiment, the second information is used to determine afrequency domain bandwidth of the first sub-band, indicating that: thesecond information is used to indirectly indicate the frequency domainbandwidth of the first sub-band.

In one embodiment, the second information is transmitted through ahigher-layer signaling.

In one embodiment, the second information is transmitted through aphysical-layer signaling.

In one embodiment, the second information includes all or part of ahigher-layer signaling.

In one embodiment, the second information includes all or part of aphysical-layer signaling.

In one embodiment, the second information is transmitted through aPhysical Broadcast Channel (PBCH).

In one embodiment, the second information includes one or more fields ina Master Information Block (MIB).

In one embodiment, the second information is transmitted through aDownlink Shared Channel (DL-SCH).

In one embodiment, the second information is transmitted through aPhysical Downlink Shared Channel (PDSCH).

In one embodiment, the first information includes one or more fields ina System Information Block (SIB).

In one embodiment, the first information includes one or more fields inRemaining System Information (RMSI).

In one embodiment, the second information includes all or part of aRadio Resource Control (RRC) signaling.

In one embodiment, the second information is broadcast.

In one embodiment, the second information is unicast.

In one embodiment, the second information is cell specific.

In one embodiment, the second information is UE-specific.

In one embodiment, the second information is transmitted through aPhysical Downlink Control Channel (PDCCH).

In one embodiment, the second information includes all or part of fieldsof a Downlink Control Information (DCI) signaling.

In one embodiment, the second information is transmitted by a PhysicalDownlink Control Channel (PDCCH) scrambled by a Common Control RadioNetwork Temporary Identifier (CC-RNTI).

In one embodiment, the second information is transmitted through anunlicensed spectrum.

In one embodiment, the first signaling indicates the first referencetime-instant.

In one embodiment, the first signaling is used to determine thefrequency domain resources occupied by the first radio signal,indicating that: the first signaling indicates the first referencetime-instant, the first-type communication node selects a candidate timelength autonomously in a candidate time-length subset of the K candidatetime-length subsets corresponding to the target time-instant subset, andthe first-type communication node determines the time domain resourcesoccupied by the first radio signal according to the first referencetime-instant and the selected candidate time length.

In one embodiment, the frequency domain resources occupied by the firstradio signal is the entire first sub-band.

In one embodiment, the first signaling is used to determine at least oneof {frequency domain resources occupied by the first radio signal, timedomain resources occupied by the first radio signal}, indicating that:the first signaling is used by the first-type communication node todetermine at least one of {frequency domain resources occupied by thefirst radio signal, time domain resources occupied by the first radiosignal}.

In one embodiment, the first signaling is used to determine at least oneof {frequency domain resources occupied by the first radio signal, timedomain resources occupied by the first radio signal}, indicating that:the first signaling is used to directly indicate at least one of{frequency domain resources occupied by the first radio signal, timedomain resources occupied by the first radio signal}.

In one embodiment, the first signaling is used to determine at least oneof {frequency domain resources occupied by the first radio signal, timedomain resources occupied by the first radio signal}, indicating that:the first signaling is used to indirectly indicate at least one of{frequency domain resources occupied by the first radio signal, timedomain resources occupied by the first radio signal}.

In one embodiment, the first signaling is used to determine at least oneof {frequency domain resources occupied by the first radio signal, timedomain resources occupied by the first radio signal}, indicating that:the first signaling is used to explicitly indicate at least one of{frequency domain resources occupied by the first radio signal, timedomain resources occupied by the first radio signal}.

In one embodiment, the first signaling is used to determine at least oneof {frequency domain resources occupied by the first radio signal, timedomain resources occupied by the first radio signal}, indicating that:the first signaling is used to implicitly indicate at least one of{frequency domain resources occupied by the first radio signal, timedomain resources occupied by the first radio signal}.

In one embodiment, the first signaling is all or part of aphysical-layer signaling.

In one embodiment, the first signaling is all or part of a higher-layersignaling.

In one embodiment, the first signaling is all or part of an RRCsignaling.

In one embodiment, the first signaling is transmitted through a PhysicalDownlink Control Channel (PDCCH).

In one embodiment, the first signaling includes all or part of fields ofDownlink Control Information (DCI).

In one embodiment, the first signaling is received in a Common SearchSpace (CSS).

In one embodiment, the first signaling is received in a UE-specificSearch Space (USS).

In one embodiment, the first signaling includes all or part of an uplinkgrant.

Embodiment 6

Embodiment 6 is a schematic diagram illustrating K candidatetime-instant subsets according to an embodiment of the disclosure. InFIG. 6 , the horizontal axis represents time, the obliquely filledrectangle represents the first radio signal, and the unfilled rectanglerepresents Q energy detections.

In Embodiment 6, the transmission starting time-instant of the firstradio signal in the disclosure is a first time-instant, each candidatetime-instant subset of the K candidate time-instant subsets in thedisclosure comprises a positive integer number of candidatetime-instants, the K is a positive integer greater than 1; a targettime-instant subset is one of the K candidate time-instant subsets, thefirst time-instant belongs to the target time-instant subset; afrequency domain bandwidth of the first sub-band to which Q energydetections belong is used to determine the target time-instant subsetout of the K candidate time-instant subsets, the frequency domainresources occupied by the first radio signal belong to the firstsub-band; the first information is transmitted through an air interface.

In one embodiment, a length of a time interval between any one candidatetime-instant within the K candidate time-instant subsets and a firstreference time-instant belongs to a first candidate time-length set, theK candidate time-instant subsets respectively correspond to K candidatetime-length subsets, the lengths of time intervals between candidatetime-instants in any one of the K candidate time-instant subsets and thefirst reference time-instant constitute a candidate time-length subsetof the K candidate time-length subsets corresponding to the any one ofthe K candidate time-instant subsets; and the first information in thedisclosure is used to indicate the K candidate time-length subsets inthe first candidate time-length set.

In one embodiment, a length of a time interval between any one candidatetime-instant within the K candidate time-instant subsets and a firstreference time-instant belongs to a first candidate time-length set, theK candidate time-instant subsets respectively correspond to K candidatetime-length subsets, the lengths of time intervals between candidatetime-instants in any one of the K candidate time-instant subsets and thefirst reference time-instant constitute a candidate time-length subsetof the K candidate time-length subsets corresponding to the any one ofthe K candidate time-instant subsets; the first information in thedisclosure is used to indicate the K candidate time-length subsets inthe first candidate time-length set; at least one of {an amount ofcandidate time lengths in the first candidate time-length set, thedistribution of candidate time lengths in the first candidatetime-length set} is related to a subcarrier spacing of a subcarrierincluded in frequency domain resources occupied by the first radiosignal.

In one embodiment, the first radio signal successively occupies a partof a multi-carrier symbol and a positive integer number of completemulti-carrier symbol(s) in time domain, and the signal transmitted inthe part of the multi-carrier symbol occupied by the first radio signalis a cyclic extension of the signal transmitted in the earliest completemulti-carrier symbol occupied by the first radio signal.

Embodiment 7

Embodiment 7 is a schematic diagram illustrating a relationship betweenK candidate time-instant subsets and K candidate time-length subsetsaccording to an embodiment of the disclosure, as shown in FIG. 7 . InFIG. 7 , the first column represents a candidate time-instant subset,the second column represents a candidate time-length subset, the thirdcolumn represents a first reference time-instant, and the fourth columnrepresents a first candidate time-length set.

In Embodiment 7, a length of a time interval between any one candidatetime-instant within the K candidate time-instant subsets and a firstreference time-instant in the disclosure belongs to a first candidatetime-length set, the K candidate time-instant subsets respectivelycorrespond to K candidate time-length subsets, the lengths of timeintervals between candidate time-instants in any one of the K candidatetime-instant subsets and the first reference time-instant constitute acandidate time-length subset of the K candidate time-length subsetscorresponding to the any one of the K candidate time-instant subsets;and the first information in the disclosure is used to indicate the Kcandidate time-length subsets in the first candidate time-length set.

In one embodiment, the first reference time-instant is configurable.

In one embodiment, the first reference time-instant is a boundary of aslot.

In one embodiment, the first reference time-instant is a boundary of onesubframe.

In one embodiment, the first reference time-instant is a boundary of asub-slot.

In one embodiment, the first reference time-instant is one of possiblestarting time-instants of a scheduling-based uplink transmission in anunlicensed spectrum.

In one embodiment, the first candidate time-length set includes apositive integer number of time lengths.

In one embodiment, the first candidate time-length set includes morethan one time length.

In one embodiment, each candidate time length of the first candidatetime-length sets is greater than zero.

In one embodiment, each candidate time length of the first candidatetime-length sets is not less than zero.

In one embodiment, one candidate time length of the first candidatetime-length sets is equal to zero.

In one embodiment, each candidate time length of the first candidatetime-length sets has a unit of microseconds (μs).

In one embodiment, each candidate time length of the first candidatetime-length sets has the same unit.

In one embodiment, two candidate time lengths of the first candidatetime-length sets have different units.

In one embodiment, one candidate time length of the first candidatetime-length sets has a unit of Orthogonal Frequency DivisionMultiplexing (OFDM) symbol number.

In one embodiment, one candidate time length of the first candidatetime-length sets has a unit of Discrete Fourier Transform-SpreadOrthogonal Frequency Division Multiplexing (DFT-s-OFDM) symbol number.

In one embodiment, the first information is used to indicate the Kcandidate time-length subsets in the first candidate time-length set,indicating that: the first information is used to directly indicate theK candidate time-length subsets in the first candidate time-length set

In one embodiment, the first information is used to indicate the Kcandidate time-length subsets in the first candidate time-length set,indicating that: the first information is used to indirectly indicatethe K candidate time-length subsets in the first candidate time-lengthset

In one embodiment, the first information is used to indicate the Kcandidate time-length subsets in the first candidate time-length set,indicating that: the first information is used to explicitly indicatethe K candidate time-length subsets in the first candidate time-lengthset

In one embodiment, the first information is used to indicate the Kcandidate time-length subsets in the first candidate time-length set,indicating that: the first information is used to implicitly indicatethe K candidate time-length subsets in the first candidate time-lengthset

In one embodiment, the first information is used to determine the Kcandidate time-length subsets, indicating that: the first information isused to indicate the K candidate time-length subsets in the firstcandidate time-length set, so as to determine the K candidatetime-instant subsets corresponding to the K candidate time-lengthsubsets.

Embodiment 8

Embodiment 8 is a schematic diagram illustrating a relationship betweena first candidate time-length set and a subcarrier spacing of asubcarrier included in frequency domain resources occupied by a firstradio signal according to an embodiment of the disclosure, as shown inFIG. 8 . In FIG. 8 , the first column represents whether the time domainresources occupied by the first radio signal are in the Maximum ChannelOccupation Time (MCOT) of the receiver of the first radio signal, thesecond column represents a subcarrier spacing of a subcarrier includedin the frequency domain resources occupied by the first radio signal,and the third column represents the first candidate time-length set.

In Embodiment 8, at least one of {an amount of candidate time lengths inthe first candidate time-length set in the disclosure, the distributionof candidate time lengths in the first candidate time-length set} isrelated to a subcarrier spacing of a subcarrier included in frequencydomain resources occupied by the first radio signal in the disclosure.

In one embodiment, at least one of {an amount of candidate time lengthsin the first candidate time-length set in the disclosure, thedistribution of candidate time lengths in the first candidatetime-length set} is further related to whether the time domain resourcesoccupied by the first radio signal are included in the Maximum ChannelOccupation Time (MCOT) of the receiver of the first radio signal.

In one embodiment, an amount of candidate time lengths in the firstcandidate time-length set is a positive integer greater than 1.

In one embodiment, the distribution of candidate time lengths in thefirst candidate time-length set comprises a difference between any twocandidate time lengths in the first candidate time-length set.

In one embodiment, the distribution of candidate time lengths in thefirst candidate time-length set comprises a pattern of time lengthdimensions of candidate time lengths in the first candidate time-lengthset.

In one embodiment, at least one of {an amount of candidate time lengthsin the first candidate time-length set, the distribution of candidatetime lengths in the first candidate time-length set} is related to asubcarrier spacing of a subcarrier included in frequency domainresources occupied by the first radio signal, indicating that: asubcarrier spacing of a subcarrier included in frequency domainresources occupied by the first radio signal is used by the first-typecommunication node to determine at least one of {an amount of candidatetime lengths in the first candidate time-length set, the distribution ofcandidate time lengths in the first candidate time-length set}.

In one embodiment, at least one of {an amount of candidate time lengthsin the first candidate time-length set, the distribution of candidatetime lengths in the first candidate time-length set} is related to asubcarrier spacing of a subcarrier included in frequency domainresources occupied by the first radio signal, indicating that: at leastone of {an amount of candidate time lengths in the first candidatetime-length set, the distribution of candidate time lengths in the firstcandidate time-length set} varies with the subcarrier spacing betweenthe subcarriers included in the frequency domain resources occupied bythe first radio signal.

In one embodiment, at least one of {an amount of candidate time lengthsin the first candidate time-length set, the distribution of candidatetime lengths in the first candidate time-length set} is related to asubcarrier spacing of a subcarrier included in frequency domainresources occupied by the first radio signal, indicating that: at leastone of {an amount of candidate time lengths in the first candidatetime-length set, the distribution of candidate time lengths in the firstcandidate time-length set} has a specific mapping relationship with thesubcarrier spacing between the subcarriers included in the frequencydomain resources occupied by the first radio signal.

In one embodiment, the subcarrier spacing between the subcarriersincluded in the frequency domain resources occupied by the first radiosignal is equal to one of {15 kHz, 30 kHz, 60 kHz, 120 kHz, 240 kHz, 480kHz, 960 kHz, 1.92 MHz}.

In one embodiment, when the subcarrier spacing between the subcarriersincluded in the frequency domain resources occupied by the first radiosignal is equal to 15 kHz, the first candidate time-length set is {16μs, 25 μs, 34 μs, 43 μs, 52 μs, 61 μs, 1 OFDM or DFT-s-OFDM symbols (15kHz subcarrier spacing)}.

In one embodiment, when the subcarrier spacing between the subcarriersincluded in the frequency domain resources occupied by the first radiosignal is equal to 30 kHz, the first candidate time-length set is {16μs, 25 μs, 1 OFDM or DFT-s-OFDM symbols (30 kHz subcarrier spacing), 1OFDM or DFT-s-OFDM symbols (30 kHz subcarrier spacing)+9 μs, 1 OFDM orDFT-s-OFDM symbols (30 kHz subcarrier spacing)+18 μs, 1 OFDM orDFT-s-OFDM symbols (30 kHz subcarrier spacing)+27 μs, 2 OFDMs orDFT-s-OFDM symbols (30 kHz subcarrier spacing)}.

In one embodiment, when the subcarrier spacing between the subcarriersincluded in the frequency domain resources occupied by the first radiosignal is equal to 30 kHz, the first candidate time-length set is {16μs, 25 μs, 1 OFDM or DFT-s-OFDM symbols (30 kHz subcarrier spacing), 1OFDM or DFT-s-OFDM symbols (30 kHz subcarrier spacing)+9 μs, 1 OFDM orDFT-s-OFDM symbols (30 kHz subcarrier spacing)+18 μs, 2 OFDMs orDFT-s-OFDM symbols (30 kHz subcarrier spacing)}.

In one embodiment, when the subcarrier spacing between the subcarriersincluded in the frequency domain resources occupied by the first radiosignal is equal to 15 kHz, the first candidate time-length set is {34μs, 43 μs, 52 μs., 61 μs, 1 OFDM or DFT-s-OFDM symbols (15 kHzsubcarrier spacing)}.

In one embodiment, when the subcarrier spacing between the subcarriersincluded in the frequency domain resources occupied by the first radiosignal is equal to 30 kHz, the first candidate time-length set is {1OFDM or DFT-s-OFDM symbols (30 kHz subcarrier spacing), 1 OFDM orDFT-s-OFDM symbols (30 kHz subcarrier spacing)+9 μs, 1 OFDM orDFT-s-OFDM symbols (30 kHz subcarrier spacing)+18 μs, 1 OFDM orDFT-s-OFDM symbols (30 kHz subcarrier spacing)+27 μs, 2 OFDMs orDFT-s-OFDM symbols (30 kHz subcarrier spacing)}.

In one embodiment, when the subcarrier spacing between the subcarriersincluded in the frequency domain resources occupied by the first radiosignal is equal to 30 kHz, the first candidate time-length set is {1OFDM or DFT-s-OFDM symbols (30 kHz subcarrier spacing), 1 OFDM orDFT-s-OFDM symbols (30 kHz subcarrier spacing)+9 μs, 1 OFDM orDFT-s-OFDM symbols (30 kHz subcarrier spacing)+18 μs, 2 OFDMs orDFT-s-OFDM symbols (30 kHz subcarrier spacing)}.

Embodiment 9

Embodiment 9 is a schematic diagram illustrating a first radio signalaccording to an embodiment of the disclosure, as shown in FIG. 9 . InFIG. 9 , the horizontal axis represents time, and each grid on the timeaxis represents a multi-carrier symbol.

In Embodiment 9, the first radio signal in the disclosure successivelyoccupies a part of a multi-carrier symbol and a positive integer numberof complete multi-carrier symbol(s) in time domain, and the signaltransmitted in the part of the multi-carrier symbol occupied by thefirst radio signal is a cyclic extension of the signal transmitted inthe earliest complete multi-carrier symbol occupied by the first radiosignal.

In one embodiment, a part of the multi-carrier symbol and a positiveinteger number of complete multi-carrier symbol(s) occupied by the firstradio signal in time domain are continuous in time domain.

In one embodiment, the time length of a part of the multi-carrier symboloccupied by the first radio signal in time domain is related to asubcarrier spacing of a subcarrier in the frequency domain occupied bythe first radio signal.

In one embodiment, the number of complete multi-carrier symbol(s)occupied by the first radio signal in time domain is related to asubcarrier spacing of a subcarrier in the frequency domain occupied bythe first radio signal.

In one embodiment, the signal transmitted in the part of themulti-carrier symbol occupied by the first radio signal is a cyclicextension of the signal transmitted in the earliest completemulti-carrier symbol occupied by the first radio signal, which isimplemented by:

${s_{i}^{(p)}(t)} = \left\{ \begin{matrix}0 & {0 \leq t < {N_{start}^{FS3}T_{s}}} \\{‐\ {s_{i + 1}^{(_{p})}\left( {t - {N_{{CP},i}T_{s}}} \right)}} & {{N_{start}^{FS3}T_{s}} \leq t < {\left( {N_{{CP},i} + N} \right)T_{s}}}\end{matrix} \right.$

Where s_(i) ^((p))(t) represents a signal transmitted in themulti-carrier symbol to which the part of the multi-carrier symboloccupied by the first radio signal belongs, s_(i) ^((p))(t) represents asignal transmitted in the earliest complete multi-carrier symboloccupied by the first radio signal, N_(start) ^(FS3) represents theposition in the multi-carrier symbol to which the part of themulti-carrier symbol occupied by the first radio signal belongs in thefirst time-instant, N_(CP,i) represents the length of the CP in themulti-carrier symbol to which the part of the multi-carrier symboloccupied by the first radio signal belongs, and T_(s) represents the useof the time interval.

Embodiment 10

Embodiment 10 is a block diagram illustrating the structure of aprocessing device of the first-type communication node device accordingto an embodiment of the disclosure, as shown in FIG. 10 . In FIG. 10 ,the processing device 1000 of the first-type communication node devicecomprises a first receiver 1001, a second receiver 1002, and a firsttransmitter 1003. The first receiver 1001 comprises atransmitter/receiver 456 (including an antenna 460), a receivingprocessor 452 and a controller/processor 490 in FIG. 4 of thedisclosure; the second receiver 1002 includes a transmitter/receiver 456(including an antenna 460) and a receiving processor 452 in FIG. 4 ofthe disclosure; the first transmitter 1003 includes atransmitter/receiver 456 (including an antenna 460), a transmittingprocessor 455 and a controller/processor 490 in FIG. 4 of thedisclosure.

In Embodiment 10, the first receiver 1001 receives the firstinformation; the second receiver 1002 performs Q energy detectionsrespectively in Q time sub-pools within a first sub-band, wherein the Qis a positive integer greater than 1; if the energy detected by eachenergy detection of the Q energy detections is lower than a firstthreshold, the first transmitter 1003 starts to transmit a first radiosignal at a first time-instant; wherein the first information is used todetermine K candidate time-instant subsets, each candidate time-instantsubset of the K candidate time-instant subsets comprises a positiveinteger number of candidate time-instants, the K is a positive integergreater than 1; a target time-instant subset is one of the K candidatetime-instant subsets, the first time-instant belongs to the targettime-instant subset; a frequency domain bandwidth of the first sub-bandis used to determine the target time-instant subset out of the Kcandidate time-instant subsets, the frequency domain resources occupiedby the first radio signal belong to the first sub-band; the firstinformation is transmitted through an air interface.

In one embodiment, the first receiver 1001 receives second information;wherein the second information is used to determine a frequency domainbandwidth of the first sub-band, and the second information istransmitted through the air interface.

In one embodiment, a length of a time interval between any one candidatetime-instant within the K candidate time-instant subsets and a firstreference time-instant belongs to a first candidate time-length set, theK candidate time-instant subsets respectively correspond to K candidatetime-length subsets, the lengths of time intervals between candidatetime-instants in any one of the K candidate time-instant subsets and thefirst reference time-instant constitute a candidate time-length subsetof the K candidate time-length subsets corresponding to the any one ofthe K candidate time-instant subsets; and the first information is usedto indicate the K candidate time-length subsets in the first candidatetime-length set.

In one embodiment, a length of a time interval between any one candidatetime-instant within the K candidate time-instant subsets and a firstreference time-instant belongs to a first candidate time-length set, theK candidate time-instant subsets respectively correspond to K candidatetime-length subsets, the lengths of time intervals between candidatetime-instants in any one of the K candidate time-instant subsets and thefirst reference time-instant constitute a candidate time-length subsetof the K candidate time-length subsets corresponding to the any one ofthe K candidate time-instant subsets; and the first information is usedto indicate the K candidate time-length subsets in the first candidatetime-length set; at least one of {an amount of candidate time lengths inthe first candidate time-length set, the distribution of candidate timelengths in the first candidate time-length set} is related to asubcarrier spacing of a subcarrier included in frequency domainresources occupied by the first radio signal.

In one embodiment, the first receiver 1001 receives a first signaling;wherein the first signaling is used to determine at least one of{frequency domain resources occupied by the first radio signal, timedomain resources occupied by the first radio signal}, and the firstsignaling is transmitted through the air interface;

In one embodiment, the first radio signal successively occupies a partof a multi-carrier symbol and a positive integer number of completemulti-carrier symbol(s) in time domain, and the signal transmitted inthe part of the multi-carrier symbol occupied by the first radio signalis a cyclic extension of the signal transmitted in the earliest completemulti-carrier symbol occupied by the first radio signal.

Embodiment 11

Embodiment 11 is a block diagram illustrating the structure of aprocessing device of the second-type communication node device accordingto an embodiment of the disclosure, as shown in FIG. 11 . In FIG. 11 ,the processing device 1110 of the second-type communication node devicecomprises a second transmitter 1101 and a third receiver 1102. Thesecond transmitter 1101 comprises a transmitter/receiver 416 (includingan antenna 420), a transmitting processor 415 and a controller/processor440 in FIG. 4 of the disclosure; the third receiver 1102 comprises atransmitter/receiver 416 (including an antenna 420), a receivingprocessor 412 and a controller/processor 440 in FIG. 4 of thedisclosure.

In Embodiment 11, the second transmitter 1101 transmits the firstinformation; the third receiver 1102 receives the first radio signal;wherein the first information is used to determine K candidatetime-instant subsets, each candidate time-instant subset of the Kcandidate time-instant subsets comprises a positive integer number ofcandidate time-instants, the K is a positive integer greater than 1; atarget time-instant subset is one of the K candidate time-instantsubsets, the transmission starting time-instant of the first radiosignal is a first time-instant, the first time-instant belongs to thetarget time-instant subset; a frequency domain bandwidth of the firstsub-band is used to determine the target time-instant subset out of theK candidate time-instant subsets, the frequency domain resourcesoccupied by the first radio signal belong to the first sub-band; thefirst information is transmitted through an air interface.

In one embodiment, the second transmitter 1101 transmits secondinformation; wherein the second information is used to determine afrequency domain bandwidth of the first sub-band, and the secondinformation is transmitted through the air interface.

In one embodiment, a length of a time interval between any one candidatetime-instant within the K candidate time-instant subsets and a firstreference time-instant belongs to a first candidate time-length set, theK candidate time-instant subsets respectively correspond to K candidatetime-length subsets, the lengths of time intervals between candidatetime-instants in any one of the K candidate time-instant subsets and thefirst reference time-instant constitute a candidate time-length subsetof the K candidate time-length subsets corresponding to the any one ofthe K candidate time-instant subsets; and the first information is usedto indicate the K candidate time-length subsets in the first candidatetime-length set.

In one embodiment, a length of a time interval between any one candidatetime-instant within the K candidate time-instant subsets and a firstreference time-instant belongs to a first candidate time-length set, theK candidate time-instant subsets respectively correspond to K candidatetime-length subsets, the lengths of time intervals between candidatetime-instants in any one of the K candidate time-instant subsets and thefirst reference time-instant constitute a candidate time-length subsetof the K candidate time-length subsets corresponding to the any one ofthe K candidate time-instant subsets; and the first information is usedto indicate the K candidate time-length subsets in the first candidatetime-length set; at least one of {an amount of candidate time lengths inthe first candidate time-length set, the distribution of candidate timelengths in the first candidate time-length set} is related to asubcarrier spacing of a subcarrier included in frequency domainresources occupied by the first radio signal.

In one embodiment, the second transmitter 1101 transmits a firstsignaling; wherein the first signaling is used to determine at least oneof {frequency domain resources occupied by the first radio signal, timedomain resources occupied by the first radio signal}, and the firstsignaling is transmitted through the air interface;

In one embodiment, the first radio signal successively occupies a partof a multi-carrier symbol and a positive integer number of completemulti-carrier symbol(s) in time domain, and the signal transmitted inthe part of the multi-carrier symbol occupied by the first radio signalis a cyclic extension of the signal transmitted in the earliest completemulti-carrier symbol occupied by the first radio signal.

The ordinary skill in the art may understand that all or part steps inthe above method may be implemented by instructing related hardwarethrough a program. The program may be stored in a computer-readablestorage medium, for example Read-Only Memory (ROM), hard disk or compactdisc, etc. Optionally, all or part steps in the above embodiments alsomay be implemented by one or more integrated circuits. Correspondingly,each module unit in the above embodiment may be realized in the form ofhardware, or in the form of software function modules. The disclosure isnot limited to any combination of hardware and software in specificforms. The first-type communication node device, UE or terminal in thedisclosure include but not limited to mobile phones, tablet computers,notebooks, network cards, low power consumption devices, eMTC devices,NB-IoT devices, in-vehicle communication devices, and other radiocommunication devices. The second-type communication node device, basestation or network side device in the disclosure includes but notlimited to macro-cellular base stations, micro-cellular base stations,home base stations, relay base stations, eNB, gNB, transmissionreceiving nodes TRP, and other radio communication devices.

The above are merely the preferred embodiments of the disclosure and arenot intended to limit the scope of protection of the disclosure. Anymodification, equivalent substitute and improvement made within thespirit and principle of the disclosure are intended to be includedwithin the scope of protection of the disclosure

What is claimed is:
 1. A method in a first-type communication node forwireless communication, comprising: receiving first information, thefirst information includes all or part of fields in an InformationElement (IE) in a Radio Resource Control (RRC) signaling, the firstinformation is UE-specific; performing Q energy detections respectivelyin Q time sub-pools within a first sub-band, wherein the Q is a positiveinteger greater than 1, received power is monitored in a correspondingtime sub-pool of the Q time sub-pools, the first sub-band consists offrequency domain resources occupied by a positive integer number ofPhysical Resource Blocks (PRBs) in a frequency domain for a givenSubcarrier Spacing (SCS); and if energy detected by each energydetection of the Q energy detections is lower than a first threshold,starting to transmit a first radio signal at a first time-instant, thefirst radio signal is transmitted through a Physical Uplink SharedChannel (PUSCH); wherein the first information is used to determine Kcandidate time-instant subsets, each candidate time-instant subset ofthe K candidate time-instant subsets comprises a positive integer numberof candidate time-instant(s), the K is a positive integer greater than1; a target time-instant subset is one of the K candidate time-instantsubsets, the first time-instant belongs to the target time-instantsubset, the target time-instant subset includes more than one candidatetime-instant, and a transmitter of the first radio signal selects thefirst time-instant in the target time-instant subset randomly; afrequency-domain bandwidth of the first sub-band is used to determinethe target time-instant subset out of the K candidate time-instantsubsets, the frequency-domain resources occupied by the first radiosignal belong to the first sub-band; the first information istransmitted through an air interface; and the first radio signalsuccessively occupies a part of a multi-carrier symbol and a positiveinteger number of complete multi-carrier symbol(s) in the time domain,and a signal transmitted in the part of the multi-carrier symboloccupied by the first radio signal is a cyclic extension of a signaltransmitted in an earliest complete multi-carrier symbol occupied by thefirst radio signal; the first threshold is in a unit of dBm, the firstthreshold is related to the bandwidth of the first sub-band, the firstthreshold is set by the transmitter of the first radio signal within agiven range.
 2. The method according to claim 1, further comprising:receiving second information; wherein the second information is used todetermine a frequency-domain bandwidth of the first sub-band, and thesecond information is transmitted through the air interface.
 3. Themethod according to claim 1, wherein a length of a time interval betweenone candidate time-instant within the K candidate time-instant subsetsand a first reference time-instant belongs to a first candidatetime-length set, the K candidate time-instant subsets respectivelycorrespond to K candidate time-length subsets, lengths of time intervalsbetween candidate time-instants in any one of the K candidatetime-instant subsets and the first reference time-instant constitute acandidate time-length subset of the K candidate time-length subsetscorresponding to the any one of the K candidate time-instant subsets;and the first information is used to indicate the K candidatetime-length subsets in the first candidate time-length set.
 4. Themethod according to claim 3, wherein a distribution of candidate timelengths in the first candidate time-length set is related to asubcarrier spacing of a subcarrier included in frequency-domainresources occupied by the first radio signal.
 5. The method according toclaim 1, further comprising: receiving a first signaling; wherein thefirst signaling is used to determine at least one of frequency-domainresources occupied by the first radio signal or time-domain resourcesoccupied by the first radio signal, and the first signaling istransmitted through the air interface.
 6. The method according to claim1, wherein any one of the Q time sub-pools occupies continuous timedomain resources, the earliest one of the Q time sub-pools has adifferent time length from other time sub-pools.
 7. The method accordingto claim 1, wherein one of the K candidate time-instant subsets includesonly one candidate time-instant, another one of the K candidatetime-instant subsets includes more than one candidate time-instant; thefrequency domain resources occupied by the first radio signal are all ora part of the interlaces in the first sub-band.
 8. A method in asecond-type communication node for wireless communication, comprising:transmitting first information, the first information includes all orpart of fields in an Information Element (IE) in a Radio ResourceControl (RRC) signaling, the first information is UE-specific; andreceiving a first radio signal, the first radio signal is transmittedthrough a Physical Uplink Shared Channel (PUSCH); wherein the firstinformation is used to determine K candidate time-instant subsets, eachcandidate time-instant subset of the K candidate time-instant subsetscomprises a positive integer number of candidate time-instant(s), the Kis a positive integer greater than 1; a target time-instant subset isone of the K candidate time-instant subsets, a starting time-instant oftransmitting the first radio signal is a first time-instant, the firsttime-instant belongs to the target time-instant subset, the targettime-instant subset includes more than one candidate time-instant, and atransmitter of the first radio signal selects the first time-instant inthe target time-instant subset randomly; a frequency-domain bandwidth ofa first sub-band is used to determine the target time-instant subset outof the K candidate time-instant subsets, frequency-domain resourcesoccupied by the first radio signal belong to the first sub-band, thefirst sub-band consists of frequency domain resources occupied by apositive integer number of Physical Resource Blocks (PRBs) in afrequency domain for a given Subcarrier Spacing (SCS); the firstinformation is transmitted through an air interface; and the first radiosignal successively occupies a part of a multi-carrier symbol and apositive integer number of complete multi-carrier symbol(s) in the timedomain, and a signal transmitted in the part of the multi-carrier symboloccupied by the first radio signal is a cyclic extension of a signaltransmitted in an earliest complete multi-carrier symbol occupied by thefirst radio signal; the first threshold is in a unit of dBm, the firstthreshold is related to the bandwidth of the first sub-band, the firstthreshold is set by the transmitter of the first radio signal within agiven range.
 9. The method according to claim 8, further comprising:transmitting second information; wherein the second information is usedto determine a frequency-domain bandwidth of the first sub-band, and thesecond information is transmitted through the air interface.
 10. Themethod according to claim 8, wherein a length of a time interval betweenone candidate time-instant within the K candidate time-instant subsetsand a first reference time-instant belongs to a first candidatetime-length set, the K candidate time-instant subsets respectivelycorrespond to K candidate time-length subsets, lengths of time intervalsrespectively between candidate time-instants in any one of the Kcandidate time-instant subsets and the first reference time-instantconstitute a candidate time-length subset of the K candidate time-lengthsubsets corresponding to the any one of the K candidate time-instantsubsets; and the first information is used to indicate the K candidatetime-length subsets in the first candidate time-length set.
 11. Themethod according to claim 10, wherein a distribution of candidate timelengths in the first candidate time-length set is related to asubcarrier spacing of a subcarrier included in frequency-domainresources occupied by the first radio signal.
 12. The method accordingto claim 8, further comprising: transmitting a first signaling; whereinthe first signaling is used to determine at least one offrequency-domain resources occupied by the first radio signal ortime-domain resources occupied by the first radio signal, and the firstsignaling is transmitted through the air interface.
 13. The methodaccording to claim 8, wherein one of the K candidate time-instantsubsets includes only one candidate time-instant, another one of the Kcandidate time-instant subsets includes more than one candidatetime-instant; the frequency domain resources occupied by the first radiosignal are all or a part of the interlaces in the first sub-band.
 14. Afirst-type communication node device for wireless communication,comprising: a first receiver, to receive first information, the firstinformation includes all or part of fields in an Information Element(IE) in a Radio Resource Control (RRC) signaling, the first informationis UE-specific; a second receiver, to perform Q energy detectionsrespectively in Q time sub-pools within a first sub-band, wherein the Qis a positive integer greater than 1, received power is monitored in acorresponding time sub-pool of the Q time sub-pools, the first sub-bandconsists of frequency domain resources occupied by a positive integernumber of Physical Resource Blocks (PRBs) in a frequency domain for agiven Subcarrier Spacing (SCS); and a first transmitter, if energydetected by each energy detection of the Q energy detections is lowerthan a first threshold, to start to transmit a first radio signal at afirst time-instant, the first radio signal is transmitted through aPhysical Uplink Shared Channel (PUSCH); wherein the first information isused to determine K candidate time-instant subsets, each candidatetime-instant subset of the K candidate time-instant subsets comprises apositive integer number of candidate time-instant(s), the K is apositive integer greater than 1; a target time-instant subset is one ofthe K candidate time-instant subsets, the first time-instant belongs tothe target time-instant subset, the target time-instant subset includesmore than one candidate time-instant, and a transmitter of the firstradio signal selects the first time-instant in the target time-instantsubset randomly; a frequency-domain bandwidth of the first sub-band isused to determine the target time-instant subset out of the K candidatetime-instant subsets, the frequency-domain resources occupied by thefirst radio signal belong to the first sub-band; the first informationis transmitted through an air interface; and the first radio signalsuccessively occupies a part of a multi-carrier symbol and a positiveinteger number of complete multi-carrier symbol(s) in the time domain,and a signal transmitted in the part of the multi-carrier symboloccupied by the first radio signal is a cyclic extension of a signaltransmitted in an earliest complete multi-carrier symbol occupied by thefirst radio signal; the first threshold is in a unit of dBm, the firstthreshold is related to the bandwidth of the first sub-band, the firstthreshold is set by the transmitter of the first radio signal within agiven range.
 15. The first-type communication node device according toclaim 14, wherein the first receiver receives second information;wherein the second information is used to determine a frequency-domainbandwidth of the first sub-band, and the second information istransmitted through the air interface.
 16. The first-type communicationnode device according to claim 14, wherein a length of a time intervalbetween one candidate time-instant within the K candidate time-instantsubsets and a first reference time-instant belongs to a first candidatetime-length set, the K candidate time-instant subsets respectivelycorrespond to K candidate time-length subsets, lengths of time intervalsrespectively between candidate time-instants in any one of the Kcandidate time-instant subsets and the first reference time-instantconstitute a candidate time-length subset of the K candidate time-lengthsubsets corresponding to the any one of the K candidate time-instantsubsets; and the first information is used to indicate the K candidatetime-length subsets in the first candidate time-length set.
 17. Thefirst-type communication node device according to claim 16, wherein adistribution of candidate time lengths in the first candidatetime-length set is related to a subcarrier spacing of a subcarrierincluded in frequency-domain resources occupied by the first radiosignal.
 18. The first-type communication node device according to claim14, wherein the first receiver receives a first signaling; wherein thefirst signaling is used to determine at least one of frequency-domainresources occupied by the first radio signal or time-domain resourcesoccupied by the first radio signal, and the first signaling istransmitted through the air interface.
 19. The first-type communicationnode device according to claim 14, wherein any one of the Q timesub-pools occupies continuous time domain resources, the earliest one ofthe Q time sub-pools has a different time length from other timesub-pools.
 20. The first-type communication node device according toclaim 14, wherein one of the K candidate time-instant subsets includesonly one candidate time-instant, another one of the K candidatetime-instant subsets includes more than one candidate time-instant; thefrequency domain resources occupied by the first radio signal are all ora part of the interlaces in the first sub-band.